As you both have this option checked please check if announcement subject and content is filled in Dashboard > Front End PM > Settings > Emails

@Tavan databasse option should not be missing. I have tested so many ways to find a issue in my installation but can not find. Every time it is working and.

Please give me access to your website (admin, ftp and database), so that i can try there. Please full backup your website before giving me access, so that if something goes wrong (never happen with me, but in case) you can restore.

Please create a role and add some test users to that role, which role i can make announcement to.